AQA A Level Biology复习笔记6.1.7 The Pacinian Corpuscle
The Pacinian Corpuscle Humans possess a wide range of receptor cells that can detect and respond to a large variety of stimuli For example, temperature, taste, sound, heat and light T...
AQA A Level Biology复习笔记6.1.6 Causes of Animal Movement
Investigating Environmental Factors That Cause Animal Movement Environmental factors can be abiotic or biotic Abiotic factors are the non-living parts of an environment For example: temperat...
AQA A Level Biology复习笔记6.1.5 Reflex Arcs
Reflex Arcs There are three main types of neurone: sensory, relay and motor Sensory neurones carry impulses from receptors to the Central Nervous System (CNS - the brain or spinal cord) Rela...
AQA A Level Biology复习笔记6.1.4 Taxis & Kinesis
Taxis & Kinesis An organism must find favourable living conditions in order to survive For complex organisms like monkeys and wolves, this seems like an easy process They possess eyes, e...
AQA A Level Biology复习笔记6.1.3 Indoleacetic Acid (IAA)
Indoleacetic Acid (IAA) Indoleacetic acid (IAA) is a specific growth factor found in plants IAA is synthesised in the growing tips of roots and shoots (ie. in the meristems, where cells are ...
AQA A Level Biology复习笔记6.1.2 Growth Factors in Flowering Plants
Growth Factors in Flowering Plants Growth responses in plants Just like animals, the survival of plants is dependent on their ability to respond to changes in their environment Some plants p...
AQA A Level Biology复习笔记5.4.4 Fertilisers
The Use of Natural & Artificial Fertilisers When organisms in natural ecosystems die or produce waste, the waste and dead matter decompose This decomposition is carried out by saprobiont...
AQA A Level Biology复习笔记5.4.3 Microorganisms Role in Recycling Minerals
Microorganisms Role in Recycling Minerals In natural ecosystems, nutrients (such as nitrogen and phosphorus) are recycled through food webs For example, these nutrients get passed on from pr...
AQA A Level Biology复习笔记5.4.2 Practical Skill: Investigate the Effect of Minerals on Plant Growth
Practical Skill: Investigate the Effect of Minerals on Plant Growth Photosynthesis produces carbohydrates Carbohydrates contain the chemical elements carbon, hydrogen and oxygen, which can b...
